Pear-burner.



J. J. MESSERLI & J. L. MAYPIELD. PEAR BURNER. APPLIGATION'I'ILED NOV. 5, 1912.

1,074,374, r Patented Sept. 30, 1913.

' 60 INVENTORS WITNESSES 25 r 5; (he-a551, 47/0 /7420 g ATTORNEYS COLUMBIA PLANOGRAPH C0.,WASH!NGTON, D. c.

UNITED STATES Parr:

JOHN J. MESSERLI, 0F KINGSVILLE, AND JESSE L. MAYFIELID, OF CORPUS CHRISTI, TEXAS.

PEAR-BURNER.

Application filed November 5, 1912.

invented certain new and useful Improve ments in Pear-Burners, of which the following is a specification.

Our invention relates to burners of the type suitable for use with hydrocarbon fuels and adapted to be manipulated directly by hand, being used for instance for burning small objects located in positions not readily accessible.

More particularly stated, our invention comprehends a burner of this general character and having such form as to adapt it specially for burning off the pines of cactus, prickly pears, and the like.

It is a fact that many tropical and semitropical plants more or less related to the cactus family can be used for food for cattle, provided the spines or needle-like projections with which such vegetation is usually covered can be effectively removed. This is most readily done by applying to the leaves of the vegetation a flame from a burner carried in the hand of the operator. In order to render a burner of this kind effective, it should be capable of vaporizing the hydrocarbon fuel employed, and in doing this the vaper should be heated by the flame of the burner. During the step of heating, however, the liquid hydrocarbon should be so supplied to the burner that the heat of the latter in causing vaporization does not set up undue back pressure in the supply pipe through which the fuel is fed to the burner. Care should also be exercised to insure a gradual and uniform vaporization of the liquid rather than violent ebul lition of the same.

In our device we seek to feed the hydrocarbon liquid into a heating coil carriedby and forming a part of the burner, the introduction of the liquid into this coil being efl'ected at the coolest part of the coil, so that as the liquid wends its way through the various loops or convolutions of the coil, the liquid gradually becomes heated and after this readily makes its escape by continuing its initial direction of movement.

We further seek to provide an improved de- Specification of Letters Patent.

Patented Sept. 3%, 1913.

Serial No. 729,588.

vice of this character in which the hydrocarbon fuel employed is lodged in a compartment adjacent to the upper end of a handle in order to be readily supplied from said compartment to facilitate the burning of objects located overhead relatively to the operator who is manipulating the handle. lVe also seek to provide an improved construction of alr pump for forcing air into .the handle from which the hydrocarbon liquid is supplied.

Reference is made to the accompanying drawing forming a part of this specification and in which like letters indicate like parts.

Figure 1 is a side elevation showing our improved burner complete and ready for use; Fig. 2 is a detail showing in fragmentary section the burner mechanism; Fig. 3 is a detail showing in section the heating coil used for vaporizing the hydrocarbon liquid fuel; and, Fig. 4 is a detail showing the burner head carrying the burner tip. Fig. 5 is a fragmentary section through the tank showing the parts contained thereby.

A tank 4 having the form of a longitudinal cylinder serves the double purpose of a handle and fuel tank. The cylinder 4: is provided at its ends with caps 5, 6. An air pump barrel 7 is mounted upon the cap 6, and forms part of the air pump for the purpose of producing an air pressure within the cylinder. The cap 6 is closed by a plug 8 which is removed from time to time to permit the introduction of hydrocarbon liouid in the cylinder.

Extending from the cap 6 is a pipe section 9 which carries a hand valve 10. A pipe section 11 is connected to the pipe section 9 by a flexible pipe joint 12. Another pipe section 13 of smaller diameter than the pipe section 11 is connected with the latter by aid of a reducing thimble 14. A hood 15 having generally the form of a cylinder open at its ends is mounted upon the pipe section 13.

Connected with the pipe section 13 and preferably integral with the same is a heating coil 16. Extending through this heat ing coil is a portion 16 of straight pipe, and mounted upon the outer or free end of this ortion is a burner head 17. Located withln one end of the tank i is a partition 20 so arranged as to form a compartment 21. The pipe section 9 extends from the which air is forced into the tank 4..

cap 6 and into this compartment, being held in position by aid of a boss 22. l The burner head 17 may, if desired, be an ordinary pipe section and the burner tip 18 may be of any approved construction but in this instance is made massive in form in order to enable it to withstand heat. The burner head 17 may be threaded internally at 19 and screwed on the pipe section 16, but the precise manner of its attachment is immaterial. The inner end of the pump cylinder 7 is secured to a angle block 23 the latter being provided with an L-shaped passage 24 which merges into a recess 25. A valve casing 26 having a cylindrical form is secured to the tank 4 and extendsradially inward therefrom being secured at its inner end to the angle block 23. A nipple is shown at 27' and extending inwardly from this nipple is a valve rod 28 carrying a number of valve cups 29 made in this instance of leather. The valve casing 26 is provided with two small holes 30 through A pump rod is shown at 31 and carries a cup valve 32 and a handle 33. \Vhen the pump rod 31 is reoiprocated by aid of the handle 83, air is forced into the tank 4: and compressed. If n w the tank contains a supply of liquid hydrocarbon fuel and a portion of this fuel is within the compartment 21 and air is pumped into the tank as above described, the air pressure tends to expel the hydrocarbon fuel through the pipe sections 9, 11, 13, the heating coil 16 and barner tip 18.

The operation of our device is as follows :'The parts being assembled as above described and a quantity of liquid hydrocarbon fuel having been placed in the tank, the pump handle is operated as above described, and heat being applied to theheating coil 16 so as to vaporize the hydrocarbon, the vapor is lighted and a flame therefore issues from the hood 15. The operator now uses the cylindrical tank l as a handle and by its aid may direct a flame against objects'to be burned. Even when the objects arelocated overhead, the operator has no diiliculty in applying the flame to them, because when the tank 4 used as a handle and its end nearest the hood 15 is raised to a considerable angle upward, the fuel within the compartment 21 is readily forced through the pipe as above described. The burner as a whole may therefore be inclined either downwardly or upwardly as desired.

The device is of special service in burning off the thorns and needles growing upon various plants of the cactus kind and may vaporized and by the time it gets'entirely through the coil it is completely formed into vapor. Except for the provision of feeding the hydrocarbon fuel into the'cool- .est part of the coil and gradually conducting it into successively hotter portions, it is possible that violent ebullition might take place owing to the sudden conversion of the hydrocarbon fuel into vapor. By our arrangement, the vapor thus formed can produce no sudden or excessive ba-ck' pressure and no violent ebullition can be so produced as to endanger the safety of the apparatus.

We do not limit ourselves to the exact construction shown, as variations may be made in the form of our invention without departing from the spirit thereof.

Having thus described our invention, we claim as new and desire to secure by Letters Patent. r

A pear burner comprising a'tank having a substantially tubular form and adapted to hold a hydrocarbon liquid, a valve cas mg containing valve mechanism and eX- tending radially into said tank, a pump barrel extending axially into said tank, an angle block mounted upon sald valve castween said valve casing and said pump barrel, a partition disposed across said casing and provided with a bottomso as to form a compartment for holding a quantity of liquid hydrocarbon, a pipe extending into said casing and into said compartment, and a burner carried by said pipe.

JOHN lldESSER-LI. JESSE L. MAYFIELD. lVitnesses as to the signature of John J. Messerli: 7

S. T. HOWARD, R. E. THOMAS. VVitnessesas to the signature Mayfield:

TV. A. WAKEFIELD, FRED Ronnnrs.

of Jesse L.

Copies of this patent may be obtained for five cents each, by addressing the Gomniissioner of Patents, Washington, D. O. y.

ing and connected with saidpump barrel j for the purpose of supporting the latter 

